可以清理数据库节点的数据表

internal/db/db_test.go

@@ -1,13 +1,44 @@
 package db
 
 import (
+	"database/sql"
+	"database/sql/driver"
+	_ "github.com/go-sql-driver/mysql"
 	"github.com/iwind/TeaGo/Tea"
 	_ "github.com/iwind/TeaGo/bootstrap"
 	"github.com/iwind/TeaGo/dbs"
 	"testing"
+	"time"
 )
 
-func TestDB(t *testing.T) {
+func TestDB_Env(t *testing.T) {
 	Tea.Env = "prod"
 	t.Log(dbs.Default())
 }
+
+func TestDB_Instance(t *testing.T) {
+	for i := 0; i < 10; i++ {
+		db, err := sql.Open("mysql", "root:123456@tcp(127.0.0.1:3306)/db_edge?charset=utf8mb4&timeout=30s")
+		if err != nil {
+			t.Fatal(i, "open:", err)
+		}
+		db.SetConnMaxIdleTime(time.Minute * 3)
+		db.SetConnMaxLifetime(time.Minute * 3)
+		db.SetMaxIdleConns(0)
+		db.SetMaxOpenConns(1)
+		go func(db *sql.DB, i int) {
+			for j := 0; j < 100; j++ {
+				err := db.Ping()
+				if err != nil {
+					if err == driver.ErrBadConn {
+						return
+					}
+					t.Fatal(i, "exec:", err)
+				}
+				time.Sleep(1 * time.Second)
+			}
+			t.Log(i, "ok", db)
+		}(db, i)
+	}
+	time.Sleep(100 * time.Second)
+}